How did the conferences, intended primarily to work toward ending world war ii, also seek to prevent a third world war?

The correct answer to this open question is the following.

The conferences, intended primarily to work toward ending World War II, also seek to prevent a Third World War in that due to the world political situation, nations such as the United States and Greta Britain decide to take actions to prevent the issues that led to WWII, aimed to avoid another world confrontation.

We are talking about the Atlantic Conference and Charter of August 14, 1941, signed by British Primer Minister Winston Churchill and US President Franklin D. Roosevelt. Both countries affirmed that they were committed to helping the world after the war, promoting trade between nations, and ensure the world they were not going to seek land expansions or occupations in exhange for help.

b. the 200th birthday of the united states